Yarn carrier controlling mechanism



Sept. l2, 1933. E. F.-HArHAwAY YARN CARRIER coNTRoLLING MECHAMSM Filed March 4; 195o Patented Sept. 12,1933

VUlsurlsnsra TES PAT 1,926,535 YARN CARRIER coNTnoLLING l MECHANISM Edgar F. Hathaway, WellesleyfrMass., fass-ignorl f' to Shawmut EngineeringCompany, Dorchester;

Mass., aV corporationl of Massachusetts implication March 4,1930. serial N9. 433,004A 5 claims. (c1. 139-7) My Y present` invention relates to pile `fabric looms, such-as carpet looms, and more particu;

larly'aims to provide improved means for conu veylng the yarn carriers `ortube frames Yand for presenting them successively in operativeposi@k tion. j. i In the drawing illustrating one form anism embodying the invention,

Fig.` 1 is a partly diagrammatic side elevation of portions'of a loom and ofV the yarn-carrier or of mech# pattern chain mechanism therefor;

Y frame-guiding and positioning means at the short section of a carrier chain;v 1 Fig. 3 is a side elevation of the chain shown in Fig. 2, looking at the inner side of the chain;

Fig. 2 is a planfview, upon a-larger scale, of a Fig. iis anelevation' upon an'` intermediate scale, showing a section of a vertical run ofthev operative or transfer position of the tube frames o1carriers.@" N `l l.

Referringto Fig; l, a portion of one loom side is seenat 1. The carrier or pattern chain is supported upon a framework including 'theupV rightsv 2 andthe top beam 3, similar members being also provided at the vopposite side ofthe loom. i i i x A chain such as generally; employed in this con` nection is made up of `alternate single .links 4, see Figs.` 2 and 3, and double links 5. It passes over upper guide wheels or sprockets, `one of which is seenat 6 inFig. 1, downaround a sim-' 'ilar sprocket 7 at the operative or transfer posifv tion, and which is usually adriven element, and

is "looped around series of intermediate and lower guide pulleys or wheels 8 and 9. Itis caused to travel, step by step, in either direction yarn carriers or frames successively to their operative or transfer position, at the lower left portion of Fig. 1. f u

.The tube frames or. yarn carriers, as best seen in Figs. 4 and 5, comprise' longitudinal bars ;or frames proper 1l) carrying a series of tuft yarn guides or tubes 11` for the yarns or spools 12 journale'd `in spool brackets V13 on the frames, The term frame or yarn frame ishereafter used in the description andclaims to refer generically to any forms'of element for supporting and directing a series of yarn units in this art. The frames ,are adapted for supporting attachment to the pattern chains, herein releasably, by suitable'suspension means atv the frame ends, comas the patternrequirernents dictate, to. bring the.

monly termed ears or brackets; These'ma'y Vbeof various forms, such for example as -inmy PatentsNos. 1,528,611, V1,621,406 or others;` As herein` shownv they include an` offset armor` bracket il'll'and` a cooperating movablelatchv or hookj'15.l .f Inexisting practice the suspension .element or frame ear. is usually connected Vto the chain by entering lthearm 14 directly between `the 'sides of `ra` doublelink unit 5 and engaging' the latch `or hook 15 over one edge of. the link."Y The frames are thus heldv withftheirtubes or yarn guides l substantially perpendiculartothej chain at all times.' Thus throughouta horizontal run the frames stand substantially!upright,l whilinverftical runs they. project outwardly from the'chain .approximately `horizontally or somewhat below the horizontal. However, the frames are required to be readily releasable from the" chains fortransfer into theloom and considerable play isnecessarily'present between the frameiears and vthe engaged chain link. This frequently occa-1 sions an objectionable swinging or flopping of the frames from one angle. to another.` relative to the chains-particularly whereth'ey pass froma horizontal to a vertical run oir-vice versa. Such flopping over of the framesis sometimeszso vio,

lent 'as to cause the frames to becomeldisengaged from the chain oril todislodge yarn'spoolsffrom f their frames, with resultantv costly delays in the 'weaving operations `andgpossiblegreat damage to the'loom.'

In a copending. applicationseriarNo.'433,003;

y iiled Marchi-1930 I have disclosed and .claimed means whereby this objectionablefeature 'isfob viatedby supportingthe frames while permitting vthemto shift gently from one to. another angle4 V relative Ato theV chain. My present inventioin` while dealing withthesame general problem,tre-` movesthe cause of the abrupt violent shifting of the lframes on the chains, byfmaking them self-positioning relative thereto land enabling them always to retain a given angle with respect tothe true vertical, regardless of their position along the chain, whetherin a'horizontal or inl a verticalru'n.` .i y

In the present embodiment ofthe inventionl 'the frames'l., are rotatively associatedwith the chains aboutaiies parallelv with `.the frames them-i selves. As best seen'in Figs. 2 `and 3",j I hereinV provide rotatable or swiveled members: orjframe receivers 16- onY thechains `at the 'pointsg'where framesare to be attachedf Eachsuchframe receiver 16 asa-whole may be generallysimilar. to

a Vdouble-link unit ofthe; chain and asushown comprises two longitudinal platesV 17 separated by spacers 1'8, which may be separately formed or trally thereof a journal 19 projecting through spaced fromy its supporting chain link.

It will be understood that similar, sprockets f and chain mechanism are provided at the oppo-l site side of lthe loom as that shown in Fig. l, the

' frames 10 being supported by and betweenA the receiverson the'chains atthe two'loomsides. Where frames of thesame standard lengthsfas heretofore'are to be employed, the spacing between the sprocketsan'd chains at the opposite loom sides is 'made such Aastobrin'g the frame receivers,shown at theinner face of the chains,

into'proper alignment with theframe ears or brackets.

yThrough the described means, thetube frames oryarn'carriers I10 are adapted to remain in substantial parallelism rwith themselves throughout .their-entire extent of travel. `Theirposition Vassumed inA the illustrated form ofthe invention iswithv their'yarn tubes or'. guides v11 vpointed downward, inthe lsame-position in which-they are requiredtoy befor presenting their yarns to the Warp.. This pendant position of the; frames is automaticallyassumed and maintained, the center ofgravity of the frames being; below theiraxis of rotative association with' the chains." j l When the frames are traveling onk a horizontal; frun of the chain, asfatthetopyin Fig. l', also in Figs. 2 and 3*, and asshoWn inl section in Fig. 5;

it will beseen that the .frame receivers le, While always: remaining substantially` horizontal, are

then parallel with the (chain ,.proper.. As' the,

frames pass about the sprocket or guide wheel, a relative turning movement takes lplacebetween the supporting linksand the frame receivers, in ,one or the; oppositel direction depending. on` the direction of chain travel, until in an ensuing `ver- V tical run thelinks are substantially at right angles to their supported v'frame receivers, as clearly seen in Fig. 4. i

` Means desirably is provided adjacent-the operativeior 'presenting position. ofthel frames luto bring theml to and holdthem inv proper 1position Aforcooperation withthe vtransfer. mechanism Of' the loom.v As illustrated at thelovver left 'portion of Fig.V 1 and in detail in Fig. 6, this means herein comprises a horizor'ital-` armror positioner V23 fonia bracket 24 attached toa convenient xed part of the sloom, and` preferablyV duplicated at the other loom side. vEach positioner is proportioned and located'fto lie in the path 'of the adjacent: chain andof `thegouter portion "of the frame v,receivers 16 thereon` as theframes reach thebottomof. the loopo chainat theleft in'Fig. 1, 'the' pointgat which' they are taken from the chainA by thev transfer mechanism or so called transfer camsand returned thereto. The under surface of the frame receiver ,16 supporting the `'-frame then in operative position seatsy upon the upper-face of the positioner 23and isk thus positively iprevented 'from turning, Vaccurately positioningk and holding 'thefframe ',The'free endof the :.positi'oner ispreferably somewhat down- Y t 1,926,535 'bearing apertures 20m` the vlirlks ofthe double chain ,unitsya :"'Afcollar 21jat5the' baseof the journal 1.9-'holds 'the frame Vreceiver properly support and` guide the chain proper across its entire width., For example, as seen in Figs. l and 5, anguide bar or Way 27 desirablyv is provided,

ymounted on posts 28 disposed at suitable intervals along the chain-supporting framework. This guide or way 27, as shown, is of sufiicient width tofextend entirely across below the chain, which upper face of the way.` The posts 28 preferably have upwardly extended portionsy or fingers 29 ymoves along and is supported and guided on the which serve to 'guidethe chain laterally, thaty is. Y lengthwise of the yarn carriers or tube frames,`

thusffurther insuring proper movement thereof and accurate alignment between the entire series' of supported frames. y A A Y Incertain of its aspects myinvention `is also lapplicable to; looms wherein ythe yarn frames are not removed from the chains during weaving.

My invention `is not limitedto'the particular embodiment thereof herein illustrated and described, its scope being set forth in the following claims.

I claim: Y

vthe pattern chains and their supporting mechanism, a plurality of` yarn frames, means on the chains whereby the frames are rotatively supported on and between the chains, and means adjacent the operativeVY or transfer position ofthe frames to engage and restrain said means on the chains thereby to position and hold aframe for :transfer: y

l .2. ln a. tutt-fabric loom in combination with the pattern chains and ltheir supporting mechanism, a plurality of yarn frames, rockable'receivers on the chains to support the frames, and positioning means at the frametransfer point to hold the receivers of aY presented frame against rocking.

8. vInA a tuft-fabric loom, in combination with the pattern chains and'their lsupporting mechanism, a plurality of yarn frames having suspensionA elements each including an offset arm and movable'latch, andreceivers on the chains for said suspension elements, eachcomprising a pair of spaced v'plate members adapted to receive'the `oset arm of a frame suspension elementfbetween themand to receive the cooperating latch of said suspension element, and means intermediate the ends of said members connecting them to the ad-j `jacent chain link for movementrrelative to the latter.- y y ,Y l

4. VIn a' tuft-fabric' loom, in combination with the pattern ,chains and their supporting mechanism, a plurality of yarn frames, meanson the chains, carriedby but in laddition to and offset fromthelinks themselves, `for supporting the frames by engagement therewith .in planes parallel tov but spaced from the .longitudinal vertical planes of thechains proper, and chain-guiding means cooperatingl with the under faces ofthe chain links in said longitudinal Aplanes of the chains proper; k

, 5.In a tuft-fabric loom, in combination, pattern chainscomprising hingedly, connected links, means rotativel5r carried by some of the links-for detachably receiving latch-typesuspension elementsofyarn frames, and positioning vmeans on tern chains at desired times. 1 A

` A EDGAR F. HAfII-IAWAY.

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